Registration Dossier
Registration Dossier
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EC number: 212-092-1 | CAS number: 762-12-9
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The vapour pressure of the substance is 0.04Pa at 20°C (using isothermal gravimetry method)
Key value for chemical safety assessment
- Vapour pressure:
- 0.04 Pa
- at the temperature of:
- 20 °C
Additional information
Bisdecanoylperoxide is a solid with a low melting point.
A guideline and well detailed study is available.
As a first approach, the static method was followed. When heated, the test item started to melt and the pressure measured was highly disturbed and unstable. Because of thermal unstability when heated and melted, it was concluded that the vapour pressure could not be accurately determined according to static method.
The isothermal thermogravimetric effusion method was then chosen for the determination of the vapour pressure of bisdecanoyl peroxide. The test was carried out at 50°C , 55°C and 60°C (at lower temperatures, the loss rates were not high enough for the equipment sensitivity, and at higher temperatures the signal started to be disturbed by the test item decomposition). The vapour pressure of the test substance was then extrapolated with Clausius-Clapeyron equation.
The vapour pressure is determined to be 0.04 Pa at 20°C
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